<<script>
    var jsd={
    name:'sfd',
    age:45
    }
    var jsd1=function(){}
    jsd1.prototype.pro="sf"
    console.log(typeof(jsd))
    console.log(jsd)
    var jsf=eval(jsd)
    var jsf1=new jsd1()
    console.log(jsf)
    console.log(jsd)
    console.log(jsd1)
    console.log(jsf1)
    function Person(name){
    this.name = name
    }
    Person.prototype.SayHello=function(){alert(this.name)}
    function Employee(name,salary){
    Person.call(this,name)
    this.salary=salary
    }
    Employee.prototype=new Person()
    Employee.showMoney=function(){
    alert(this.name+"----"+this.salary)
    }
    var bg=new Person("bg")
    var sj=new Employee("sj",45)
    alert(bg.sayHello == sj.sayHello)
    </script>